monadnock

mo.nad.nock

n.（名词）
A mountain or rocky mass that has resisted erosion and stands isolated in an essentially level area.
残丘：在基本水平地区单独存在的能抗腐蚀的山地或岩石

来源：
After Mount Monadnock , a peak of southwest New Hampshire
源自 蒙纳德诺克 ，美国新罕布什尔州西南部一山峰